These are the ZF2 equivalents of ZF1 functions, both of which produce the expected output:

Zend_Locale::getTranslation(); Zend_Locale_Data::getContent();

Possible solution:

The function \Zend\Locale\Data\Cldr::getContent() has a long switch statement (lines 900-1300) containing each of the possible CLDR lookups. It does not have the cases for 'language' or 'defaultnumberingsystem'. These could be added as follows: